“…On the other hand, although a large number of organic molecules have been investigated as potential linkers, metal–organic frameworks with diverse topology incorporating carboxylate, pyridine, or triazole ligands have witnessed the most important development. − However, the ligands comprising triazole, carboxylate, and pyridine groups have not been studied thoroughly up to now. In this paper, we designed and synthesized a new ligand with one carboxylate, one pyridine and one triazole groups, namely, 1-(4-pyridinylmethyl)-1 H -1,2,4-triazole-3-carboxylate (Hpmtc), as a continued investigation concerning the influence of anions on the self-assembly processes, because it has remarkable features in the construction of MOFs: (i) The Hpmtc ligand containing multidentate carboxylate, pyridine, and triazole is a potential multipurpose bridge that could facilitate construction of high-dimensional structures. Additionally, the Hpmtc ligand has one possible steric configuration by rotating pyridine rings with different angles, which therefore can exhibit versatile fashions to satisfy the space geometries of the metal ions.…”